A motorcyclist drives from place A to B with a uniform speed of 30 km hrl and returns from place B to A
with a uniform speed of 20 km h Find his average speed.
Answers
Answered by
0
Answer:
Let the length of the line segment AB be x m
The time taken is given as t=distance covered/speed
Total time = t
1
+t
2
=
30
x
+
20
x
=
60
5x
h
Average speed = Total distance/Total time =
5x/60
2x
=24 km/h
Explanation:
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Answered by
1
Explanation:
Let the length of the line segment AB be x m
The time taken is given as t=distance covered/speed
Total time =t1 + t2 = x/30 + x/20= 5x/60h
Average speed = Total distance/Total time =
2x/5x/60
2x × 60/ 5x = 120x/5x
= 24km/h
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